Home / 131,238.54-196,944.66-72,115.38

Finding the Fourth Proportional to 131,238.54, 196,944.66 and 72,115.38

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Solution

The fourth proportional to 131,238.54, 196,944.66 and 72,115.38 is: 108,220.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,238.54 : 196,944.66 = 72,115.38 : x
  2. Step 2: Convert to fraction form
    131,238.54/196,944.66 = 72,115.38/x
  3. Step 3: Cross multiply
    131,238.54x = 196,944.66 × 72,115.38
  4. Step 4: Simplify right side
    131,238.54x = 14,202,737,649.57
  5. Step 5: Solve for x
    x = 14,202,737,649.57/131,238.54
  6. Step 6: Final answer
    x = 108,220.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.